Automatic safety-valve



-(No Model.) PLGENNET & J. WYMAN, Jr.

AUTOMATIC SAFETY VALVE. No. 349,389. Patented Sept. 21,1886.

N. PETERS. PhnkmLlmograpMr, Wuhinglnn. 11 a UNITED STATES PATENT'OFFICE.

PAUL GENNET AND JAMES 'WYMAN, J R. OF COCHRANTON, PENNSYLVANIA.

AUTOMATIC SAFETY-VALVE.

SPECIFICATION forming part of Letters Patent No. 349,389, datedSeptember 21, 1886. Application filed May 7, 1886. Serial No. 201,460.(No model.)

' States, residing at Cochranton, in the county of Crawford and State ofPennsylvania, have invented a new and useful Improvement in AutomaticSafety-Valves, of which the following is a specification.

Our invention relates to an improvement in gasregulating valves 5 and itconsists in the peculiar construction and combination of devices,thatwill be more fully set forth hereinafter, andparticularly pointed outinthe claims.

In the drawings, Figure 1 is aside elevation of a valve embodying ourimprovements. Fig. 2 is a vertical longitudinal sectional view of thesame. Fig. 3 is a top plan view partly in section.

A represents a pipe-coupling or valve-case, which is provided with avalve-seat, B, located between the inlet-opening O and thedischargeopening D. The valve-seat communicates at its lower end withthe inlet-opening O, and to the upper side of the pipe-coupling orvalve- U case is screwed a vertical sleeve, E, through whichpasses avalve-stem, F. To the lower end of the valve-stem is secured acup-shaped valve, G, which fits in the valve-seat and normally closesthe same, so as to cut oft communication between the inlet and thedischarge openings of the pipe-coupling or valvecase. To the upper endof the sleeve E is screwed a head, H, through which the upper end of thevalve-stem passes, and from one side of the head H projects a horizontalsleeve, I. To the upper end of the valve-stem F is attached a head orbutton, K, having an opening in one side, through which passes the upperend of a vertical stud or pin, L, that projects upwardly from the headH. The upper end of the said.

pin is screw-threaded for a suitable distance, and on the said threadedend, above the button K, is a nut, M. A coiled retractile'spring,N,

connects the button K and the head H, and the function of the saidspring is to keep the valve normally seated in the valve-seat or openingB. Near the upper end of the valve-stem, on

one side of the same, is made a recess, f. In the outer end of thehorizontal sleeve I is secured abox, 0, through which passes alocking-pin, P, the inner end of which is pointed -and adapted to enterthe opening f in the valvestem. A coiled extensile spring, R, is placedon the said locking-pin, and bears between a flange, which is formed onthe pin,and the in ner end of the box 0, thereby normally pressing thelocking-pin inwardly and keeping the inner end of said pin bearingagainst the side of the valve-stem. To the outer end of the lock ing-pinis attached a head, S.

The operation of our invention is as follows: The gas enters throughapipe communicating with the inlet-opening O,and presses under the valveG, thereby raising the same, and raising the button K on the upper endof the valvestem. By adj u'sting the nut M up or down the upwardmovement of the valve is regulated,so as to permit the said valve torise any desired distance, and thereby open the valve-seat B to anydesired extent, and thus regulate the flow of gas or fluid through thepipe. While the valve is raised, during the flow of the gas or fluid,the locking-pin is out of engagement with the opening fin thevalve-stem, as the said opening is raised above the engaging end of thepin. In order to close the valve and cut oft the supply of gas or fluid,the valve-stem is depressed by bearing upon the button K, and when thevalve is lowered sufficiently to become firmly seated in the seat oropening B, the opening f in the valve-stem aligns with the engaging endof the locking-pin, and the latter is instantly moved rearwardly by itsspring, and thereby caused to engage with the valvestem and lock thevalve firmly to the valveseat, thus efiectually shutting off the flow ofgas or fluid, and keeping it closed until the supply is again wanted.I11 order to open the valve, it is only necessary to-draw thelockingpinoutwardly by catching hold of its project ing head, thereby releasingthe locking-pin from the opening in the valve-stem, when the pressure ofthe gas or fluid on the lower side of the valve raises it as far as theregulating nut M will permit. I

Having thus described our invention, we claim- 1. The combination, in aregulating-valve, of the valve-seat, the valve having the stem F,provided with the head or button K, the regulating-screw to limit theplay of the valve, and the locking-pin adapted to engage the valve stem,to lock the valve in a closed position, substantially as described.

2. The combination, in a regulating-valve, of the valve-seat, the valvelocated therein, and having the stem F and the button K, the pin L,projecting from the valve-ease, the nut M, screwed on the upper end ofthe said pin, to bear against the button K, and thereby regulate theplay of the valve, the locking-pin to engage the valve-stem, and thespring bearing 011 the said locking-pin, for the purpose set forth,substantially as described.

3. In a regulating-valve, the combination, with the valve-seat, of thevalve located in the PAUL GENNE'I. JAMES WYMAN, JR.

WVitnesses:

'IsAAo MONDERAN, F. G. PRENATT.

